Heat pumps · Error codes · Vokèra
Er81Vokèra · Vokera Aria (R410A, on/off)
Er81 on a Vokèra Vokera Aria: Compressor working hours exceeded
Short answer
On a Vokèra heat pump, Er81 means: Compressor working hours exceeded. The manual does not say whether the heat pump stops.
Reviewed 23 September 2026 · 1 source
What it means
The manual says: Compressor working hours exceeded.
Likely causes:
- Not stated in table; see manual troubleshooting section 3.16.
Is it safe?
| Does the heat pump stop? | Not stated |
|---|---|
| Severity | Fault — needs a manual reset once the cause is fixed |
| Engineer needed? | No |
The manual does not say whether the heat pump stops.
What you can check
- Read the display; this is a protection/indication state and the manual says the unit returns to normal automatically.
- Keep the heat pump powered in cold weather so frost protection can run.
What the engineer will check
- Not stated in table; see manual troubleshooting section 3.16.
Sources
- Vokera Aria air to water heat pump - Installation & Servicing Instructions ↗ · 2009 (URL path) · page 29 · Reviewed 23 September 2026
A code explains what the controller detected, not a confirmed root cause.
Reviewed: 23 September 2026